They are still plenty rich, but their losses — some on paper and others actually realized — illustrate how few have been spared in today’s punishing market when even big-name investors, corporate executives and hedge-fund titans are all watching their wealth evaporate.

The portfolio damage for some of these high-flyers has soared to billions of dollars in recent months. And they can’t just blame the market’s downdraft — some did themselves in with badly timed stock purchases or margin calls on shares bought with loans.

"It’s always hard to beat the market no matter who you are," said Robert Hansen, senior associate dean at Dartmouth’s Tuck School of Business. "But when the ocean waters get that rough, it is hard for any boat to avoid getting swamped."